cURL error 60: SSL certificate problem: certificate has expired

Question

We running 2 application on amazon ec2 (backend.abc.com & frontend.abc.com). For that application, we used a paid SSL Certificate. That

Answer 1

It seems like your truststore is not updated with the latest trusted root. Understanding that it happened to you beginning yesterday 30th May. I am assuming that you have Sectigo as your CA.

Update your trustore and you should be able to connect.

https://support.sectigo.com/articles/Knowledge/Sectigo-AddTrust-External-CA-Root-Expiring-May-30-2020